[mutter] ClutterStageX11: Don't exposed unused function

[Jonas Ådahl <jadahl src gnome org>]

commit 942feadffd3e7a0ecbc169e95bb9aadf52271725
Author: Jonas Ådahl <jadahl gmail com>
Date:   Sun May 15 11:50:12 2016 +0800

    ClutterStageX11: Don't exposed unused function
    
    https://bugzilla.gnome.org/show_bug.cgi?id=768976

 clutter/clutter/x11/clutter-stage-x11.c |    2 +-
 clutter/clutter/x11/clutter-stage-x11.h |    3 ---
 2 files changed, 1 insertions(+), 4 deletions(-)
---
diff --git a/clutter/clutter/x11/clutter-stage-x11.c b/clutter/clutter/x11/clutter-stage-x11.c
index d19241e..b2313f3 100644
--- a/clutter/clutter/x11/clutter-stage-x11.c
+++ b/clutter/clutter/x11/clutter-stage-x11.c
@@ -432,7 +432,7 @@ clutter_stage_x11_unrealize (ClutterStageWindow *stage_window)
   clutter_stage_window_parent_iface->unrealize (stage_window);
 }
 
-void
+static void
 _clutter_stage_x11_update_foreign_event_mask (CoglOnscreen *onscreen,
                                               guint32 event_mask,
                                               void *user_data)
diff --git a/clutter/clutter/x11/clutter-stage-x11.h b/clutter/clutter/x11/clutter-stage-x11.h
index a359c99..315939e 100644
--- a/clutter/clutter/x11/clutter-stage-x11.h
+++ b/clutter/clutter/x11/clutter-stage-x11.h
@@ -91,9 +91,6 @@ struct _ClutterStageX11Class
 
 GType _clutter_stage_x11_get_type (void) G_GNUC_CONST;
 
-void  _clutter_stage_x11_update_foreign_event_mask (CoglOnscreen *onscreen,
-                                                    guint32 event_mask,
-                                                    void *user_data);
 void  _clutter_stage_x11_events_device_changed (ClutterStageX11 *stage_x11,
                                                 ClutterInputDevice *device,
                                                 ClutterDeviceManager *device_manager);